Solve the equation Ax=b by using the LU factorization given for A. Also solve Ax = b by ordinary row reduction.
[3 -7 -4] [ 1 0 0] [ -6 ]
A = [-3 3 3] = [ -1 1 0] , b= [ -9 ]
[6 6 -4] [ 2 -5 1] [ 68 ]
Let Ly=b and Ux=y. Solve for x and y.
y =
x =
Row reduce the augmented matrix [A b] and use it to find x. The reduced echelon form of [A b] is yielding x =